package packet;
import java.util.Scanner;
public class Main {
	
	public static void main(String[] args){
		Scanner num = new Scanner(System.in);
		while(num.hasNextInt()){
			int a=num.nextInt();
			int b=num.nextInt();
			if(a>1000){
				System.out.println("a<=1000");
			}
			else{
				System.out.println( a + b );
			}
		}
		num.close();
	}

}
